Avatar

Please consider registering
guest

sp_LogInOut Log In sp_Registration Register

Register | Lost password?
sp_Search Search
Advanced Search
Advanced Search

— Forum Scope —




— Match —





— Forum Options —





Minimum search word length is 3 characters - maximum search word length is 84 characters

sp_Search Search
Go to Bottom
No permission to create posts
sp_Feed Topic RSS sp_TopicIcon
Slow performance reading historical data
March 7, 2016
13:53, EET
Avatar
patger
Member
Members
Forum Posts: 5
Member Since:
July 20, 2015
sp_UserOfflineSmall Offline
Go to Top
1sp_Permalink sp_Print

Hello,

we have some strange behaviour at one of our customers with his UA Server (Siemens). The created a bunch of historizing
nodes and our own client which runs with your java sdk (and also third party UA Clients like UaExpert and others) have extremly
slow performance.

Polling 10 Items (timespan = 1h) takes over 10s, 50 Items over a minute (nearly linear evolve). Important: these items have
no values at all in the query time span.

We tried several Clients with your Simulation Server (MyLevel Node for example does historize) and the performance is very good.

The node attributes also look like they are not property configured : http://www2.pic-upload.de/img/…..edited.jpg
or does it have no impact if value & datatype is in “error red” state ?

Many thanks in advance,
Patrick

March 7, 2016
14:31, EET
Avatar
Heikki Tahvanainen
Member
Members
Forum Posts: 402
Member Since:
April 17, 2013
sp_UserOfflineSmall Offline
Go to Top
2sp_EditHistory sp_Permalink sp_Print

Hello,

The node attributes indeed seem a little weird. For example, no data type seems to be available for the value. Also, usually the “CurrentRead” AccesLevel is specified, which enables clients to read the value attribute.

Regarding the performance issue, I would suggest contacting the server vendor.

No permission to create posts
sp_Feed All RSS
Go to top
Forum Timezone: Europe/Helsinki

Most Users Ever Online: 1919

Currently Online:
11 Guest(s)

Currently Browsing this Page:
1 Guest(s)

Top Posters:

Heikki Tahvanainen: 402

hbrackel: 144

rocket science: 88

pramanj: 86

Francesco Zambon: 83

Ibrahim: 78

Sabari: 62

kapsl: 57

gjevremovic: 49

Xavier: 43

Member Stats:

Guest Posters: 0

Members: 738

Moderators: 7

Admins: 1

Forum Stats:

Groups: 3

Forums: 15

Topics: 1524

Posts: 6450

Newest Members:

jonathonmcintyre, fannielima, kristiewinkle8, rust, christamcdowall, redaahern07571, nigelbdhmp, travistimmons, AnnelCib, dalenegettinger

Moderators: Jouni Aro: 1026, Pyry: 1, Petri: 0, Bjarne Boström: 1026, Jimmy Ni: 26, Matti Siponen: 346, Lusetti: 0

Administrators: admin: 1